Quincy, IL Weather & Climate Normals
Quincy's real weather, in one number
Quincy, IL scores 48/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Quincy's hottest and coldest months
Quincy's hottest month is Jul, averaging 76°F; its coldest is Jan, averaging 27°F, a 49.7°F swing across the year, one of the widest gaps in this dataset.
Quincy's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 35°F | 19°F | 1.57in |
| Feb | 40°F | 23°F | 1.77in |
| Mar | 52°F | 32°F | 2.29in |
| Apr | 64°F | 43°F | 3.98in |
| May | 73°F | 54°F | 4.55in |
| Jun | 82°F | 63°F | 4.5in |
| Jul | 86°F | 67°F | 3.49in |
| Aug | 85°F | 65°F | 3.93in |
| Sep | 78°F | 56°F | 3.09in |
| Oct | 65°F | 45°F | 3.05in |
| Nov | 51°F | 33°F | 2.41in |
| Dec | 39°F | 24°F | 1.8in |
May, Jun, Aug, Sep, and Oct are the best time to see Quincy at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Quincy
Over a typical year, Quincy sees about 36.43in of precipitation a year across roughly 109 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Quincy ranks
Quincy ranks 2328 of 4876 US cities in this dataset for comfort score, and 37 of 330 within IL. About 38,786 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Quincy Rgnl Ap, IL US, 9.9 miles from Quincy, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated